Overview. . . OMNI is honored to be retained by CASA of Johnson and Wyandotte Counties in their search for an exceptional executive to lead the organization as. President & CEO. . Since 1985, CASA of Johnson and Wyandotte Counties has provided comprehensive advocacy for abused and neglected children ages 0-18 in need of care under the protection of the court system. The program recruits, trains and supports citizen volunteers to investigate, faci...